扩展孔径的电磁矢量多入多出雷达目标定位算法
发布时间：2018-10-13 13:40
【摘要】：提出了一种基于双基地电磁矢量多输入多输出雷达的二维收发角估计算法.针对扩展孔径条件下传统算法的周期性角度模糊问题,提出了一种从极化信息矩阵中求取收发信号波印廷矢量来实现解模糊的算法.极化信息矩阵可通过张量分解从回波数据中求取.为提高发射角估计精度,给出了一种更严格的正交约束条件:不仅要求不同阵元间发射的信号相互正交,还要求同一阵元内所有的偶极子天线发射的信号也相互正交.进而可从极化信息矩阵中得到发射角的不模糊估计.与传统算法相比,该算法通过增大阵元间距提高角度估计性能,且不会产生角度模糊,避免了谱峰搜索和额外的配对过程.仿真实验验证了算法有效性.
[Abstract]:This paper presents an algorithm for estimating two-dimensional transceiver angle based on bistatic electromagnetic vector multi-input and multi-output radar. In order to solve the periodic angle ambiguity problem of traditional algorithms under extended aperture condition, a new algorithm is proposed to solve the ambiguity problem by extracting the wave printing vector from the polarization information matrix. Polarization information matrix can be obtained from echo data by Zhang Liang decomposition. In order to improve the accuracy of the estimation of the transmission angle, a more strict orthogonal constraint condition is given: not only the signals transmitted by different array elements are required to be orthogonal to each other, but also the signals transmitted by all dipole antennas in the same burst element are also required to be orthogonal to each other. Furthermore, the nonfuzzy estimation of the emission angle can be obtained from the polarization information matrix. Compared with the traditional algorithm, the algorithm improves the performance of angle estimation by increasing the distance between the elements, and does not produce angle ambiguity, thus avoiding the spectral peak search and the extra matching process. Simulation results show that the algorithm is effective.
【作者单位】： 南京理工大学电子工程与光电技术学院;
【基金】：教育部博士点基金(20113219110018) 南京理工大学研究基金(2010ZDJH05,2011ZDJH13)
【分类号】：TN957.51
，
本文编号：2268848
[Abstract]:This paper presents an algorithm for estimating two-dimensional transceiver angle based on bistatic electromagnetic vector multi-input and multi-output radar. In order to solve the periodic angle ambiguity problem of traditional algorithms under extended aperture condition, a new algorithm is proposed to solve the ambiguity problem by extracting the wave printing vector from the polarization information matrix. Polarization information matrix can be obtained from echo data by Zhang Liang decomposition. In order to improve the accuracy of the estimation of the transmission angle, a more strict orthogonal constraint condition is given: not only the signals transmitted by different array elements are required to be orthogonal to each other, but also the signals transmitted by all dipole antennas in the same burst element are also required to be orthogonal to each other. Furthermore, the nonfuzzy estimation of the emission angle can be obtained from the polarization information matrix. Compared with the traditional algorithm, the algorithm improves the performance of angle estimation by increasing the distance between the elements, and does not produce angle ambiguity, thus avoiding the spectral peak search and the extra matching process. Simulation results show that the algorithm is effective.
【作者单位】： 南京理工大学电子工程与光电技术学院;
【基金】：教育部博士点基金(20113219110018) 南京理工大学研究基金(2010ZDJH05,2011ZDJH13)
【分类号】：TN957.51
，
本文编号：2268848
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